The Space Shuttle Endeavour during rollout in February 2011

Mission STS-134 is the last flight of the NASA Space Shuttle Endeavour. The space shuttle was completed on 25 April 1991 as a replacement for the Space Shuttle Challenger, which was lost in an accident, and completed its maiden flight on 7 May 1992. She has completed 24 flights so far, the last on 8 February 2010 (STS-130). At that time, Endeavour carried the connection node Tranquility and the Cupola observation deck to the International Space Station.